Incident details
Operator, cause, commodity and consequences with raw source fields.
GD incident on 2016-11-23 — WY
Operator
Montana - Dakota Utilities Co
Cause
Excavation Issue
Commodity
Natural Gas
Program
GD
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$4,500
Incident datetime
2016-11-23 16:27
Report number
Location
WY, SHERIDAN
Narrative
Excavation sub-contractors daniels inc. Was excavating in the area to connect a storm sewer system with a large excavator when they dug through the live 3-phase electrical primary and 3 inch pe gas service feeding the hospital. The resulting damage to the gas and electrical services caused an escape of gas and eventually a fire. The fire consumed the vacated excavator before the fire could be controlled by first responders. Mdu did not have an inspector on site at the time of the incident.
Detailed record list
Occurred At
2016-11-23 16:27:00
Year
2016
Report Received Date
2016-12-19 00:00:00
Iyear
2016.0
Report Number
20160127.0
Supplemental Number
16589.0
Report Type
Supplemental Final
Operator Id
12684
Name
Montana - Dakota Utilities Co
Operator Street Address
400 North Fourth Street
Operator City Name
Bismarck
Operator State Abbreviation
ND
Operator Postal Code
58501
Local Datetime
2016-11-23 16:15:00
Location Street Address
1401 West 5th Street
Location City Name
Sheridan
Location County Name
Sheridan
Location State Abbreviation
WY
Location Postal Code
82801
Location Latitude
44.808694
Location Longitude
-106.974187
Nrc Rpt Datetime
2016-11-23 20:48:00
Nrc Rpt Num
1164817
Commodity Released Type
Natural Gas
Unintentional Release
466.64
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Ignite Ind
Yes
Explode Ind
No
Num Pub Evacuated
0.0
Incident Identified Datetime
2016-11-23 16:27:00
On Site Datetime
2016-11-23 17:03:00
Federal
No
Location Type
Private Property
Incident Area Type
Underground
Incident Area Subtype
Exposed Due To Excavation
Depth Of Cover
36.0
Crossing
No
Pipe Facility Type
Investor Owned
System Part Involved
Service
Installation Year
2000.0
Pipe Diameter
3.0
Pipe Specification
Astm D2513
Pipe Manufacturer
Unknown
Material Involved
Plastic
Plastic Type
Polyethylene (Pe)
Plastic Sdr
11
Material Pe Pipe Code
2406
Release Type
Other
Release Type Details
Complete Sever Of Service Line, Due To 3rd Party Dig In.
Class Location Type
Class 3 Location
Est Cost Oper Paid
200000.0
Est Cost Prop Damage
4500.0
Est Cost Emergency
1500.0
Est Cost Other
0.0
Est Cost Other Details
No Other Costs Were Incurred
Est Cost Unintentional Release
200.0
Prpty
206200.0
Commercial Affected
2.0
Industrial Affected
0.0
Residences Affected
0.0
Accident Psig
55.0
Normal Psig
55.0
Mop Psig
60.0
Accident Pressure
Pressure Did Not Exceed Maop
Scada In Place Ind
No
Accident Identifier
Notification From Emergency Responder
Investigation Status
No, the facility was not monitored by a controller(s) at the time of the incident
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Excavation Damage
Cause Details
Excavation Damage By Third Party
Ex Party Type
Excavation Damage By Third Party
Prior Notification Ind
Yes
One Call System Ind
Yes
Excavator Ind
Yes
Contractor Ind
Yes
Notify Cga Dirt
Yes
Private Row Ind
Yes
Private Subtype
Private Business
Excavator Type
Contractor
Excavator Equipment
Backhoe/trackhoe
Work Performed
Sewer (Sanitary/storm)
One Call Notified Ind
Yes
One Call Ticket Num
2016470065
Locator Type
Contract Locator
Visible Marks
Yes
Service Interruption
Yes
Service Interruption Hours
6.0
Root Cause Category
Excavation Issue
Root Cause Type
Excavator Failed To Maintain Clearance After Verifying Marks
Preparer Name
M*** K***********
Preparer Title
Staff Engineer
Preparer Email
M****************@m**.com
Preparer Telephone
7012227973
Authorizer Name
P** D*****
Authorizer Title
Vp Operations
Authorizer Telephone
7012227611
Authorizer Email
P*********@m**.com
Narrative
Excavation sub-contractors daniels inc. Was excavating in the area to connect a storm sewer system with a large excavator when they dug through the live 3-phase electrical primary and 3 inch pe gas service feeding the hospital. The resulting damage to the gas and electrical services caused an escape of gas and eventually a fire. The fire consumed the vacated excavator before the fire could be controlled by first responders. Mdu did not have an inspector on site at the time of the incident.
| Occurred At | 2016-11-23 16:27:00 |
|---|---|
| Year | 2016 |
| Report Received Date | 2016-12-19 00:00:00 |
| Iyear | 2016.0 |
| Report Number | 20160127.0 |
| Supplemental Number | 16589.0 |
| Report Type | Supplemental Final |
| Operator Id | 12684 PHMSA Enforcement |
| Name | Montana - Dakota Utilities Co |
| Operator Street Address | 400 North Fourth Street |
| Operator City Name | Bismarck |
| Operator State Abbreviation | ND |
| Operator Postal Code | 58501 |
| Local Datetime | 2016-11-23 16:15:00 |
| Location Street Address | 1401 West 5th Street |
| Location City Name | Sheridan |
| Location County Name | Sheridan |
| Location State Abbreviation | WY |
| Location Postal Code | 82801 |
| Location Latitude | 44.808694 Google Maps OpenStreetMap |
| Location Longitude | -106.974187 Google Maps OpenStreetMap |
| Nrc Rpt Datetime | 2016-11-23 20:48:00 |
| Nrc Rpt Num | 1164817 NRC Report How to search |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 466.64 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Ignite Ind | Yes |
| Explode Ind | No |
| Num Pub Evacuated | 0.0 |
| Incident Identified Datetime | 2016-11-23 16:27:00 |
| On Site Datetime | 2016-11-23 17:03:00 |
| Federal | No |
| Location Type | Private Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Exposed Due To Excavation |
| Depth Of Cover | 36.0 |
| Crossing | No |
| Pipe Facility Type | Investor Owned |
| System Part Involved | Service |
| Installation Year | 2000.0 |
| Pipe Diameter | 3.0 |
| Pipe Specification | Astm D2513 |
| Pipe Manufacturer | Unknown |
| Material Involved | Plastic |
| Plastic Type | Polyethylene (Pe) |
| Plastic Sdr | 11 |
| Material Pe Pipe Code | 2406 |
| Release Type | Other |
| Release Type Details | Complete Sever Of Service Line, Due To 3rd Party Dig In. |
| Class Location Type | Class 3 Location |
| Est Cost Oper Paid | 200000.0 |
| Est Cost Prop Damage | 4500.0 |
| Est Cost Emergency | 1500.0 |
| Est Cost Other | 0.0 |
| Est Cost Other Details | No Other Costs Were Incurred |
| Est Cost Unintentional Release | 200.0 |
| Prpty | 206200.0 |
| Commercial Affected | 2.0 |
| Industrial Affected | 0.0 |
| Residences Affected | 0.0 |
| Accident Psig | 55.0 |
| Normal Psig | 55.0 |
| Mop Psig | 60.0 |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Scada In Place Ind | No |
| Accident Identifier | Notification From Emergency Responder |
| Investigation Status | No, the facility was not monitored by a controller(s) at the time of the incident |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Excavation Damage |
| Cause Details | Excavation Damage By Third Party |
| Ex Party Type | Excavation Damage By Third Party |
| Prior Notification Ind | Yes |
| One Call System Ind | Yes |
| Excavator Ind | Yes |
| Contractor Ind | Yes |
| Notify Cga Dirt | Yes |
| Private Row Ind | Yes |
| Private Subtype | Private Business |
| Excavator Type | Contractor |
| Excavator Equipment | Backhoe/trackhoe |
| Work Performed | Sewer (Sanitary/storm) |
| One Call Notified Ind | Yes |
| One Call Ticket Num | 2016470065 |
| Locator Type | Contract Locator |
| Visible Marks | Yes |
| Service Interruption | Yes |
| Service Interruption Hours | 6.0 |
| Root Cause Category | Excavation Issue |
| Root Cause Type | Excavator Failed To Maintain Clearance After Verifying Marks |
| Preparer Name | M*** K*********** |
| Preparer Title | Staff Engineer |
| Preparer Email | M****************@m**.com |
| Preparer Telephone | 7012227973 |
| Authorizer Name | P** D***** |
| Authorizer Title | Vp Operations |
| Authorizer Telephone | 7012227611 |
| Authorizer Email | P*********@m**.com |
| Narrative | Excavation sub-contractors daniels inc. Was excavating in the area to connect a storm sewer system with a large excavator when they dug through the live 3-phase electrical primary and 3 inch pe gas service feeding the hospital. The resulting damage to the gas and electrical services caused an escape of gas and eventually a fire. The fire consumed the vacated excavator before the fire could be controlled by first responders. Mdu did not have an inspector on site at the time of the incident. |
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